Cream together butter, peanut butter, brown sugar and sugar. Add egg, milk and vanilla. Beat well.
In a medium sized bowl, mix together flour, baking soda and salt. Add to creamed mixture. Beat on low speed until stiff dough forms.
Fold in 1/2 cup of chocolate chips.
Shape into 1-inch balls. Place 2 inches apart on ungreased cookie sheet. Bake until golden brown, about 10 minutes.
Top each cookie immediately with a peanut butter cup, placed upside down. Remove to wire rack to cool.
Well the cookies are cooling melt the rest of the chocolate chips in the microwave stirring every 15 seconds until melted.
Once the cookies have cooled, cut liquorice into 1 inch pieces. Using melted candy, attach 4 legs to each side of the peanut butter cup near the very bottom, and stick two eyes on top. Let set until chocolate is firm.
* I bought both my candy eyes and rope at Target if you can not get these M&M's or another small round candy would work for the eyes. For the legs you could cut up black licorice or just use chocolate cover pretzel sticks.